Abstract: A heat exchanging apparatus may include a first heat exchanger and a second heat exchanger, which may be flat plate heat exchangers and may be located entirely within an end tank of a third heat exchanger. The first and second heat exchangers each may include an inlet and an outlet and may be plate style heat exchangers. The entire first heat exchanger is located between the inlet and the outlet of the second heat exchanger. A first heat exchanger inlet mount surface, a first heat exchanger outlet mount surface, a second heat exchanger inlet mount surface and a second heat exchanger outlet mount surface may each terminate in a single plane. The third heat exchanger end tank may define a hole such that the hole is located aft of the first heat exchanger and the second heat exchanger with respect to a direction of coolant flow through the end tank.